6721-40 HERGA, 6721-40 Datasheet - Page 14

• Manufacturer Part Number: 6721-40
• Description: VACUUM SWITCH
• Manufacturer: HERGA

Specifications of 6721-40

• Connection Size: 4mm
• Contact Configuration: SPCO
• Contact Current @ Contact Voltage Ac Min: 21A
• Contact Current Ac Max: 21A
• Contact Voltage Ac Max: 250V
• External Diameter: 43mm
• External Length / Height: 38mm

6721 / 6722 ~ Vacuum Switches
Note: The spring is fitted in the vacuum cavity in contact with the media
Note: Dry Switching
If switching low power circuits, low current (4 to 100 milliamperes) and low voltage (below 30V), consult herga for special switches.
NB - Herga do not accept liability for any vacuum operated device used outside the pressure range specified by the company.
1999
As a consequence of our policy of continual improvement, we reserve the right to change without notice any detail in this publication. Please see our Conditions of Sale.
Model No
Electrical Switch
Data
Contact Rating
Vacuum
Connection
Setting Accuracy
Temperature
Range
Body Material
Diaphragm
Spring (in
Vacuum Cavity)
Electrical Rating
Average Life
Switch Standards:
Approvals Available
Expectancy
DC
AC
Pressure Switches
Benefits
These switches have been designed primarily for the
OEM manufacturer who requires low cost and high
reliability
UL recognised versions available
Mechanical
Single Pole
change over
3(1)A 250V ac
Side entry spout
4mm O/D
± 10% std
-5˚C to + 70˚C
Nylon 12
Neoprene
Spring steel
Electrical
Voltage
6721-03
125V
250V
220V
110V
12V
24V
60V
6V
FOR FURTHER INFORMATION TEL: [phone] FAX: [phone]
1)
EN 60730, EN 61058 and UL 508
CE, BEAB, CSA, DEMCO, IMQ, KEMA, NEMCO, OVE, SEMCO, SET I, SEV, UL, VDE. Approved to BS 3955 part III
Resistive
Single Pole
change over
10(3)A 250V ac
Side entry spout
4mm O/D
± 10% std
-5˚C to + 70˚C
Nylon 12
Neoprene
Spring steel
0.25A
Max Electrical Load
0.5A
6721-06
3A
3A
3A
3A
1A
1A
0.2 x 10
6731-03
2 x 10
6
@ 1A
1)
6
Inductive
0.5A
0.5A
0.2A
0.1A
Single Pole
change over
21(8)A 250V ac
Side entry spout
4mm O/D
± 10% std
-5˚C to + 70˚C
Nylon 12
Neoprene
Spring steel
6721-20/30/40
1A
1A
1A
1A
Resistive
0.25A
1)
0.5A
10A
10A
10A
0.2 x 10
5A
5A
1A
Special options are available for quantity orders
Max Electrical Load
Model No
Switches set to specific operating vacuum, rising or falling
Diaphragms in silicon rubber, nitrile, EPDM
Switches with wide or close differentials
Springs in stainless steel
6
6721-03
6721-06
6721-20
6721-30
6721-40
@ 6A
Inductive
6731-06
2 x 10
The switches have excellent repeat accuracy
Double pole switching available upon request
Wide choice of microswitch options available including
tab configurations
0.5A
0.2A
0.1A
10A
10A
10A
3A
3A
6
50K @ 10A
Motor (Pf0.75)
Inches Water
0.5HP
0.5HP
75 - 270
13 - 32
28 - 80
7 - 15
3 - 8
Vacuum Range
Resistive
0.25A
0.5A
0.2 x 10
1900 - 6860
21A
21A
21A
15A
710 - 2030
8A
1A
mm Water
180 - 380
330 - 810
75 - 200
Max Electrical Load
6
@ 10A
Inductive
1.0 x 10
6731-10
0.5A
0.2A
0.1A
15A
15A
21A
15A
7A
Differential
See chart 1
See chart 1
See chart 1
See chart 2
See chart 2
6
10K @ 21A
(Fixed)
Motor (Pf0.75)
ISSUE 01
1HP
2HP